The easiest way to satisfy this condition is to always use --external-locking together with --delay-key-write=OFF. External locking is the use of file system locking to manage contention for MyISAM database tables by multiple processes. External ...

delay_key_write Command-Line Format --delay-key-write[={OFF|ON|ALL}] System Variable delay_key_write Scope Global Dynamic Yes SET_VAR Hint Applies No Type Enumeration Default Value ON Valid Values OFFONALL This variable specifies how to use delayed ... The MySQL server maintains many system variables that affect its ...